raze-gles/libraries/timidityplus/timiditypp/resample.h

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2019-11-10 22:58:51 +00:00
/*
TiMidity++ -- MIDI to WAVE converter and player
Copyright (C) 1999-2002 Masanao Izumo <mo@goice.co.jp>
Copyright (C) 1995 Tuukka Toivonen <tt@cgs.fi>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
resample.h
*/
#ifndef ___RESAMPLE_H_
#define ___RESAMPLE_H_
#include <stdint.h>
#include "sysdep.h"
namespace TimidityPlus
{
typedef int32_t resample_t;
enum {
RESAMPLE_CSPLINE,
RESAMPLE_LAGRANGE,
RESAMPLE_GAUSS,
RESAMPLE_NEWTON,
RESAMPLE_LINEAR,
RESAMPLE_NONE
};
extern void initialize_resampler_coeffs(void);
extern void free_gauss_table(void);
typedef struct resample_rec {
splen_t loop_start;
splen_t loop_end;
splen_t data_length;
} resample_rec_t;
extern resample_t do_resamplation(sample_t *src, splen_t ofs, resample_rec_t *rec);
extern void pre_resample(Sample *sp);
class Player;
class Resampler // This is only here to put the buffer on the stack without changing all the code.
{
Player *player;
resample_t resample_buffer[AUDIO_BUFFER_SIZE] = { 0 };
int resample_buffer_offset = 0;
resample_t *rs_plain_c(int v, int32_t *countptr);
resample_t *rs_plain(int v, int32_t *countptr);
resample_t *rs_loop_c(Voice *vp, int32_t count);
resample_t *rs_loop(Voice *vp, int32_t count);
resample_t *rs_bidir(Voice *vp, int32_t count);
resample_t *rs_vib_plain(int v, int32_t *countptr);
resample_t *rs_vib_loop(Voice *vp, int32_t count);
resample_t *rs_vib_bidir(Voice *vp, int32_t count);
resample_t *porta_resample_voice(int v, int32_t *countptr, int mode);
resample_t *normal_resample_voice(int v, int32_t *countptr, int mode);
resample_t *vib_resample_voice(int v, int32_t *countptr, int mode);
int rs_update_porta(int v);
int32_t update_vibrato(Voice *vp, int sign);
public:
Resampler(Player *p)
{
player = p;
}
resample_t * resample_voice(int v, int32_t *countptr);
};
}
#endif /* ___RESAMPLE_H_ */